Strange Nuts on Baler

[lacamo]

I need to remove a metal plate from the tongue of my MF 1734 round baler. It is held on by 8 carriage bolts, the heads on the inside and the threaded ends pointing out. Instead of normal hex nuts, the bolts are secured with cone shaped nuts which I have no idea how to remove. They were screwed on and tightened with some sort of tool. I'd like to get them off without using the sawzall. Any ideas?

Thanks.

 

[Robert_in_NY]

Do you have a picture?

 

[lacamo]

Too late tonight to take a photo, but will tomorrow. Called the servic dept at the dealer and he couldn't find these mystery nuts in the shop manual.

 

[Robert_in_NY]

I don't recall seeing them before which is why I was hoping to see a pic in hopes it would jar my own memory or at least maybe help me to give you a suggestion or two. So hopefully someone else can chime in with knowledge or else I will wait for you to post a pic when you can.

 

[JoeL4330]

Does it look something like either of these "security" nuts ?

 

[lacamo]

Like the one on the left, about 1" in length, but without the notch -- nothing at all to grab onto. Will post a picture tomorrow. Thanks

 

[kebo]

If you can get to them pretty easily with a grinder, you might try grinding two flat spots on each cone (opposite sides of course) and then try and get a vice grip or adjustable wrench on them to loosen. You could always replace with regular hex nuts, of course. Just a thought....

 

[lacamo]

Here are some photos: side view, top view and how the nut & carriage bolt look together. As you can see, there's nothing to grab onto: there must be a special tool to do this...
Thanks

 

[lacamo]

If all else fails, I will remove them one way or another. Just wanted to keep things original if possible.

 

[cowski]

just weld them to the tongue or weld a nut on them.i have had to this many times on odd shaped bolts and nuts.